Apple will be implementing new security controls for apps as noted in the following link:

Apple iOS6 improves iPhone and iPad application security

QUOTE:  The next version of Apple’s mobile operating system, iOS 6, will request explicit permission before allowing third-party applications to access user information. It’s a privacy upgrade that could benefit Apple’s hundreds of millions of iPhone and iPad customers.  In the new iOS 6, Apple will force apps to get user permission before accessing Contacts, Calendars, Reminders and Photos, MacRumors reported. The enhanced security feature, outlined in the “Data Privacy” section of Apple’s iOS 6 Release Notes, was announced at the company’s Worldwide Developers